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据美国俄亥俄州铼合金公司报告，铼制的化学燃料火箭推进器已向美国宇航局(NASA)格伦(Glenn)研究中心交货，完成了该公司与格伦中心签订的小企业创新研究合同的第二阶段及最后阶段任务。这种铼制火箭推进器采用新的加工制造工艺，既减少加工时间又降低了生产成本。该工艺可采用
According to Ohio State’s rhenium alloy company, rhenium chemical fuel rocket propulsion has been delivered to the NASA Glenn Research Center, completed the company and Glenn Center for Small Business Innovation Research Contract The second phase and the final phase of the task. The rhenium rocket propulsion using new manufacturing process, both to reduce processing time and reduce production costs. This process can be used